Ok, thanks for explaining that. You are missing some parts for this. Firstly you will need to add another recordset to this page to pull the details for the item. You should add in a recordset and have it filter by the id for the item. If you have only the one then you can just hard code the filtered value.
Once you have the recordset created you can then go into the add to cart server behavior and bind the cart columns with their corresponding values from the recordset. When you do it like this you will be adding the item to the cart, and the details will be coming from your db based on the id that you filter the recordset on.
